VICOR CORP

Ticker: VICR CUSIP: 925815102 Class: Common Stock

ESSEX INVESTMENT MANAGEMENT CO LLC's Holding History (CIK: 0000201772)

Note: Option positions (PUT/CALL) are excluded.

Q4 2019

Shares 16,929 Value ($000) $791 Avg Close $38.08 Range $28.69 - $46.89

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2019	16,929	$791	$38.08	$28.69 - $46.89